---
name: "ix"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["freebsd", "openbsd"]
url: "https://new.carta.tech/ix"
---

# ix(4)

Intel 82598/82599/X540/X550/E610 PCI Express 100/1Gb/10Gb Ethernet device

## NAME

**ix** – Intel 82598/82599/X540/X550/E610 PCI Express 100/1Gb/10Gb Ethernet device

## SYNOPSIS

**ix\* at pci?**

## DESCRIPTION

The **ix** driver provides support for PCI Express 10Gb Ethernet adapters based on the Intel 82598EB, 82599EB, X540, X550, and E610 Ethernet controller chips, including the following:

- Intel 82598AF 10GbE Adapter (10GbaseSR)

- Intel 82598AF Dual Port 10GbE Adapter (10GbaseSR)

- Intel 82598EB 10GbE Adapter (10GbaseCX4)

- Intel 82598EB 10GbE Adapter (SFP+)

- Intel 82598EB Dual Port 10GbE Adapter (10GbaseCX4)

- Intel 82598EB XF 10GbE Adapter (10GbaseLR)

- Intel 82598AT 10GbE Adapter (10GbaseT)

- Intel 82598AT Dual Port 10GbE Adapter (10GbaseT)

- Intel 82599EB 10GbE Adapter (10GbaseCX4)

- Intel X520-DA2 Dual Port 10GbE Adapter (SFP+)

- Intel X520-SR1 10GbE Adapter (SFP+/10GbaseSR)

- Intel X520-SR2 Dual Port 10GbE Adapter (SFP+/10GbaseSR)

- Intel X520-LR1 10GbE Adapter (SFP+/10GbaseLR)

- Intel X520-QDA1 10GbE Adapter (QSFP)

- Intel X540-T 10GbE Adapter (10GbaseT/1000baseT/100baseTX)

- Intel X550-T 10GbE Adapter (10GbaseT/1000baseT/100baseTX)

- Intel X552 10GbE Adapter (SFP+)

- Intel Xeon-D X552/X557 embedded 10GbE Adapter (SFP+/10GbaseT)

- HotLava Tambora 64G4/80G4/64G6/120G6 (SFP+)

- Intel E610-XAT2 10GbE Adapter (10GbaseT)

SFP+ adapters generally also support SFP type modules with their associated 1000base-\* media types.

The networking interface should be brought down before disconnecting fiber optics, otherwise irreversible damage might be caused to the equipment.

## SEE ALSO

[arp(4)](/arp/4.md), [ifmedia(4)](/ifmedia/4.md), [intro(4)](/intro/4.md), [ixv(4)](/ixv/4.md), [netintro(4)](/netintro/4.md), [pci(4)](/pci/4.md), [hostname.if(5)](/hostname.if/5.md), [ifconfig(8)](/ifconfig/8.md)

## HISTORY

The **ix** driver first appeared in OpenBSD 4.4.

## AUTHORS

The **ix** driver was written by Intel Corporation and ported to OpenBSD by Reyk Floeter ⟨*reyk@openbsd.org*⟩. Claudio Jeker ⟨*claudio@openbsd.org*⟩ and Mike Belopuhov ⟨*mikeb@openbsd.org*⟩ have performed multiple updates since.